<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <form method="GET" action="http://127.0.0.1:5000/register">
        账号：<input type="text" name="user" value="admin1"><br>
        密码：<input type="text" name="password" value="123456">
    </form>
</body>
</html>